Unconventional oil ＆ gas in China And Several main Basins
Guo Tianxu China Geological Survey
National Coordinators Meeting & Workshop (UCM7) 28-30 March 2017, Bangkok, Thailand Outline
1. Unconventional oil ＆ gas in China
2. Several main Basins Unconventional oil and gas in China
n In recent years, with the increasing demand for oil and gas, unconventional oil and gas resources are becoming more and more important in the world.
n China possess abundant unconventional resource, attach importance to unconventional petroleum exploration.
n Currently , big progress is made in coalbed methane, shale gas, and so on. Coalbed methane in China u Total Coalbed methane resources: 300 trillion m3 , distributed in 45 coal basins of five regions . u Currently, commercial CBM development has succeeded in Qinshui Basin. Shale gas in China u Shale gas resource is about 31 trillion m3, it is mainly distributed in the southern，middle and western China . u Now, shale gas commercial development has succeeded in Fulin district of Chongqing province.
Fulin Outline
1. Unconventional oil ＆ gas in China
2. Several main Basins History of petroleum Exploration in China
The China geologist had found a series petroliferous basin , and then established many big oilfields in China.
In 1959, the Daqing Junggar basin Song-Liao basin oil field was found in
Tarim basin Song-Liao basin.
OrdS basin BoHai gulf basin In 1960, the Karamay oil field was found in Janghan basin Junggar basin.
Sichuan basin In 1961, the Shengli oil field was found in Bohai gulf basin. Brief introduction of main petroliferous basin in China
SongLiao basin
u Songliao basin is a depression b asin located in northeast China. u Area 260 thousands km2 . u Oil resource: 11 billion ton. u gas resource: 2.3 trillion m3 . u Developed two sets of high qual ity source rock.
坳陷
断陷 Bohai gulf basin
u Bohai gulf basin，lies in the middle of china, is a strike-slip basin which formed in Cenozoic. u Area is over 0.73 million km2 . u Oil resource: 30 billion ton, Bohai gulf basin u Gas resource: 1.5 trillion m3 . u Shahejie Fm is high quality source rock. Tarim basin
Tarim basin in located in the northwest of China, oil resources is 10.6 billion tons, and the gas resource is 10 trillion m3 .
In 2013, the Tarim oil field petroleum production reached to 23 million tons.
Tarim basin is the largest petroliferous basin which has the most exploration potential. The petroleum system partition of Tarim basin Qaidam basin Geological setting
Fault Strike-slip Sinistral Tagh Suganhu Basin Altyn deformation－uplift Qaidam Basin Da Chaidan Delingha
subside-deposition
N East Kunlun Mountain Sinistral Strike-slip Fault
Qaidam basin is located in the northeast of Tibetan Plateau, which surrounded by the Altyn Tagh fault, Qilian Mountain and East Kunlun Mountains tectonic belt Qaidam basin Geological setting
Distribution of Hydrocarbon source rock of Qaidam Basin
Qaidam basin develop four sets of oil and gas system, Jurassic of N Qaidam basin, Tertiary of W Qaidam basin, Quaternary of Sanhu in E Qaidam and Carboniferous of Delingha in NE Qaidam basin Qaidam basin Distribution of shale
Plane distribution
Thickness Map柴北缘下侏罗统湖西山组柴北缘 of Lower中 侏罗统大煤沟组 Jurassic Huxishan Formation泥页岩厚度图泥页岩厚度图 Muddy Shale in N Qaidam Basin
The thickness of muddy shale decreased from SW to SE Qaidam basin Distribution of shale
Plane distribution
Thickness Map柴北缘 of Middle中 侏罗统大煤沟组 Jurassic Dameigou Formation泥页岩厚度图 Muddy Shale in N Qaidam Basin
The sedimentary of muddy shale moved to SE and mainly distributed from Nanbaxian to the front of Qailianshan, spread to Delingha and Nuomuhong area in East region Qaidam basin Resource evaluation
QT=0.01·A·h·ρ·q
8 3 QT：Shale gas geological resources, 10 m A：Distribution area of gas-rich shale, km2 h：Effective thickness of shale, meter ρ：Shale density, ton/m3 q：Total gas content, m3/ton Qaidam basin Resource evaluation
Geological resources (P50) of shale gas in N Qaidam basin 1.38 trillion cubic meter, with recoverable resources 2.75 hundred billion cubic meter Stra Shale gas evaluation area P5 P25 P50 P75 P95 ta
Lenghu (upper） 3725 3121 2728 2339 1936
J1h Lenghu (lower) 2065 1730 1512 1297 1073
Yuqia 3562 2693 2104 1593 950
J2d Honshan 6374 4824 3829 2901 1758
Delingha 6078 4577 3608 2751 1713
Geological resources 21804 16945 13781 9968 7430 Total Recoverable resources 4361 3389 2756 1993 1486 unit: ×108m 3 Next Work
n Update the map of the black shale formation n Add data of the main basins Thanks for your attention.